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Venting methods
28-7/8"
20-15/16"
(73.3
cm)
for venting
through floor
opening for venting
through rear wall
The cooktop may be vented through the
rear wall or floor. Common venting
methods and the types of materials
needed are shown.
Make sure there is proper clearance within
the wall or floor for exhaust duct before
making cutouts.
inside wall
7-9/16"
r_
cabinet
3-1/4" x 10'_1_t
transition
II m
elbow
Iq
1 t
insidewall to roof
or overhang
wall ca
12" minimumS-
130.5 cm)_
6" round PVC
coupling
6" diameter
900 PVC
sewer pipe
outside wall
peninsula
cabinet
or island
peninsula
directly
outside
between floor joists
6" round metal duct
trans,*,on
<
)/jelb°w
I
cabinettoe space
to outside
6" round PVC
sewer pipe
(40.6 cm)
Tightly pack gravel
30' (9.1 m)
or sand completely
maximum
around pipe.
round metal transition
round metal duct
round PVC coupling
slab
round PVC sewer
pipe
diameter
90° PVC
sewer pipe
optional duct arrangement under concrete slab
Determine range blower setting.
This cooktop is equipped with a dual range blower. It is factory set at
"Low" range to be used for equivalent duct length runs of 30 feet
(9.1m) or shorter. If the equivalent duct length exceeds30 feet (9.1m),
the blower must be shifted to "High" range. Do Not shift to "High"
range for runsshorter than 30 feet (9.1m). Using the "High" range on
shorter runs will cause excessive noise and conditioned air loss, and
will affect the flame pattern of gas burners.
List the number of each piece and length of straight duct you will use.
Multiply the equivalent length by the number of pieces. Add the totals
to get the total equivalent length of your system.
Duct
Equivalent
No. of
Total
Piece
Length
Pieces/
Equivalent
Length
Length
straight duct per lineal ft,
3-1/4" x 10"
1 ft. (30.5 cm)
6" round
1 ft. (30.5 cm)
6" flexible
2 ft. (61 cm)
elbow
O
6" round 45° elbow
2.5 ft. (76 cm)
_
6" round 90° elbow
5 ft. (152 cm)
(_3-1/4"
x 10" flat elbow
12 ft. (366 cm)
3-1/4" x 10" 90° elbow
5 ft. (152 cm)
transition
to round
5" to 6"
1 ft. (30.5 cm)
air flow
1/4" x 10" to 6" 90° elbow
9 ft. (274 cm)
air flow
-1/4" x 10" to 6"
4.5 ft. (137 cm)
transition
to flat
5" to 3-1/4" x 10" 90° elbow
6 ft, (183 cm)
ir flow this direction
not recommended
air flow
to 3-1/4" x 10" 90° elbow
5 ft. (152 cm)
air flow
6" to 3-1/4" x 10"
1 ft. (30.5 cm)
_air
flow
wall cap*
3-1/4" x 10"
Oft. (0 cm)
5" or 6" round
0ft, (0 cm)
roof cap*
10" x 10"
0ft, (0 cm)
thermal break
(_
5" or 6" round
2ft. (61 cm)
Total equivalent
duct
system length
Length for required wall/roof cap has already been incorporated
into rating for maximum duct system length. A suitable wall/roof
cap must be used.
Page 4
Duct system equivalent length 30 feet
or less -- blower should be set at
"Low"
range.
Example:
2 ft.
(61
6", 900 elbows
6", wall
cap
Low range
transition
4ft. (122 cm)
cm)
90° elbows (2)
= 10 ft. (305 cm)
12 feet (366 cm) straight
= 12 ft. (366 cm)
5" to 6" transition
= 1 ft. ( 30.5 cm)
Wall cap
= 0ft.(
0
cm)
Equivalent length of 6" round system = 23 ft. (701.5 cm)
(In this example, blower can be left in
"Low" range as set at factory.)
Duct system equivalent length greater
than 30 feet -- blower should be set at
"High"
range.
Example:
2 ft.
(61 cm)_
5" to 6" transition
4 ft. (122 cm)
(183 cm)
4
(122 cm)
cm)
6" to 3-1/4" x 10"
transition
3-1/4" x 10" wall cap
blower
restricter
ring
Shifting blower
to "High" range
To shift blower to
"High" range:
1. Turn blower off.
2. Remove the air grille and
filter from blower housing.
3. Snap the spring-loaded
restricter ring out of the
blower inlet.
4. Reinstall the filter and air
grille.
90° elbows (3)
= 15 ft.
5" to 6" transition
= 1 ft.
6" to 3-1/4" x 10"transition
= 1 ft.
Wall cap
= 0 ft.
16 feet (488 cm) 6" straight
= 16 ft.
10 feet (305 cm) 3-1/4" x 10" straight
= 10 ft.
457.2 cm
30.5 cm
30.5 cm
0 cm
488 cm
305
cm
Equivalent length of 6" round system = 43 ft. (1311.2 cm)
(In this example, blower MUST be shifted to "High" range.)
Note: Flexible metal duct is Not recommended.
If it is used, calculate each foot of flexible duct as two
feet of straight metal ductwork. Flexible metal elbows
count twice as much as standard elbows.
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